！注意：以阿里云服务器作为master   腾讯云作为slave1 slave2时

修改  vim  /etc/hosts 时

，阿里云内网IP    master

腾讯云外网ip  slave1

腾讯云外网ip slave2 

否则报：java.net.BindException: Problem binding to [master:9003] java.net.BindException: Cannot assign requested address;

Caused by: java.net.BindException: Cannot assign requested address